19984620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1327}}^1$

素因数の和:1590

約数の個数: 48

約数和(自身を含む): 56222208

約数和(自身を除く): 36237588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 251, 502, 753, 1004, 1255, 1327, 1506, 2510, 2654, 3012, 3765, 3981, 5020, 5308, 6635, 7530, 7962, 13270, 15060, 15924, 19905, 26540, 39810, 79620, 333077, 666154, 999231, 1332308, 1665385, 1998462, 3330770, 3996924, 4996155, 6661540, 9992310, 19984620]

約数ペア:

[(1, 19984620), (2, 9992310), (3, 6661540), (4, 4996155), (5, 3996924), (6, 3330770), (10, 1998462), (12, 1665385), (15, 1332308), (20, 999231), (30, 666154), (60, 333077), (251, 79620), (502, 39810), (753, 26540), (1004, 19905), (1255, 15924), (1327, 15060), (1506, 13270), (2510, 7962), (2654, 7530), (3012, 6635), (3765, 5308), (3981, 5020)]